Paint-mixing machine



Patented Sept..7, 1886.

(No Model.)

' C. ROSS, Jr.

PAINT MIXING MACHINE. No. 348,931.

4&5/ i

UNITED STATES PATENT OFFICE.

)HARLES Ross, JR, OE BROOKLYN, NEW YORK.

PAINT-MlXlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 348,931, dated September 7l 1886.

Application ledJuly, 1886. Serial No. 207,3l6. (No model.)

To all whom t may concern:

Be it known that I, CHARLES Ross, .I r., a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements iii Paint-Mixing Machines, of which the following` isa specification, reference being had therein to the accompanying drawings, in which-- Figure 1 represents a perspective viewV of a paint-mixing machine provided with my improvement; Fig. 2, adetail, and Fig. 3 a detail of a modification.

This improvement relates to a device for raising and lowering the mixerarm in paintmixing machines; and the invention consists in the peculiar combinations and the construetion and arrangement of parts, hereinafter more particularly described, and then defi nitely pointed out in the claims.

Referring` now to the details of thedrawings, A represents the frame, B B' B" the bevelgear, C C the fast and loose pulleys, D the stirrer, and E the pan, of an ordinary paintmixing machine. The gear B runs on a shaft that works in an arm, F, that is capable of sliding up or down on a vertical standard, G, that rises from the frame.

In practice it is necessary to lift 'the mixer from the pan to allow of the substitution of one pan for another., and this has-heretofore been done by means of a rope passing over a pulley or pulleys attached to abeam in a door overhead. This is a very inconvenient and unmechanical contrivanee, and to avoid theuse of it is the object of my improvement. As the preferable means, I provide the standard with a rack, g, preferably sunk into the surface of the same, into which Yrack meshes a pinion, II, (see Fig. 2,) firmly secured to a shaft, I, journaled in suitable bearings inthe arm F, and having firmly fastened thereto a ratchet-wheel, J, and hand-wheel K. Pvoted to the back of the arm F is a pawl, L, which takes into the teeth of the ratchet-wheel J. By this description it is obvious that by turning the hand-wheel Ii in the direction shown by the arrows the pinion H will be turned, which, as it takes into the rack g, will necessarily raise the arm F and stirrer D to any desired extent, or so that it may be lifted clear of the pau, as shown in dotted lines, to allow of the removal of Vthe latter when necessary, as when a fresh pau of paint is to take the place of the one already mixed. It will also be evident that as the pawl catches in thel teeth of the ratchet-wheel the arm and mixer will be firmly held in any desired position. When it is desired to lower the arm and stirrer,

it is only necessary to raise the pawl L out of 6o the teeth of the ratchetwheel, when the arm and mixer will descend by the force of gravity into the pan; but to prevent too rapid descent its motion can be controlled by the handwheel K. In some cases I may use a screw, S, provided with a hand wheel, T, which screw passes through an arm, U, attached to the column, and works in a female thread formed in the arm F. JBy this construction the-arm may be raised or lowered, as desired; but it will take a longer time to operate the same, and I therefore prefer the arrangement shown in Fig. l.

It will be seen that by either of the coustruetions shown a very convenient and du rable device is produced for raising and low ering the arm, which is al'ways in position for use, and is fitted to the machine before it leaves the factory, whereas, where a rope and pulley are used, as has heretofore been practiced, the rope and pulley must be placed in position after the machine is sent to its place of operation, and, moreover, it is not always convenient to find a place for setting the pulleys over which the rope passes, both of which troubles are overcome by my improvements.

l. The combination, in a mixing-machine, and with the arm F and standard C thereof, of a hoisting device mounted in one of said parts and acting on the other, substantially as described.

2. The combination, in a mixing-machine, and with the arm F and standard G thereof, ofa pinion working in a rack formed in or attached to said standard, and means, as the shaft I and hand-wheel K, for operating said pinion, substantially as described.

3. The combination, in a mixing-machine, of the standard-G, having rack g, and the arm F, provided with bearings for the shaft; I, with presence of two witnesses, his 6th dny of July, said shaft I, n pinion operating by it and 1886. meshing` in said mok, n ratchet-wheel connected with the pinion, and a pnwi, L, Catching CHARLES ROSS JR 5 into said ratchet-wheel, substantially as de- Vitnesses:

scribed. VILLIAM MURPHY, In testimonyv whereoI afx my signature, in PATRICK BRADY. 

